<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<script type="text/javascript">
      alert('登录超时');
      if (window.top!=window.self) {
        window.top.location="${ctx}/admin/login.do";
      } else {
        window.location="${ctx}/admin/login.do";
      }
</script>